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From "Francesco Mari (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-7788) Measure read rate for the Segment Store
Date Mon, 01 Oct 2018 07:56:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-7788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Francesco Mari updated OAK-7788:
--------------------------------
    Attachment: OAK-7788-01.patch

> Measure read rate for the Segment Store
> ---------------------------------------
>
>                 Key: OAK-7788
>                 URL: https://issues.apache.org/jira/browse/OAK-7788
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Francesco Mari
>            Assignee: Francesco Mari
>            Priority: Major
>             Fix For: 1.10
>
>         Attachments: OAK-7788-01.patch
>
>
> In order to better understand the behaviour of the Segment Store, we should measure its
read rate, defined as the amount of API calls performed by the user that might trigger a read
to the underlying persistence layer. 
> The outermost API we can instrument is the NodeState. Calls to this API represent a clear
intention of the user to read the repository data. A lower level API would not carry the same
semantics and would be ineffective for deducing the intentions of the user.



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